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arXiv 1703.04832stat.ML
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数据聚类的随机有限集模型

A Random Finite Set Model for Data Clustering

Dinh Phung, Ba-Ngu Bo

摘要:

数据聚类的目标是将数据点划分成组,以最小化给定的目标函数。虽然大多数现有的聚类算法将每个数据点视为向量,但在许多应用中,每个数据不是向量,而是点模式或点集。此外,许多现有的聚类方法需要用户指定聚类的数量,这是事先不可用的。本文提出了一类新的数据聚类模型,解决集值数据以及未知数量的集群,使用泊松随机有限集的Dirichlet过程混合。我们还开发了一个有效的马尔可夫链蒙特卡罗后验推理技术,可以学习的集群和混合参数的数量自动从数据。数值研究表明,这种新模型的显着特点,特别是它的能力,发现数据中的极不平衡的集群。

英文摘要:

The goal of data clustering is to partition data points into groups to minimize a given objective function. While most existing clustering algorithms treat each data point as vector, in many applications each datum is not a vector but a point pattern or a set of points. Moreover, many existing clustering methods require the user to specify the number of clusters, which is not available in advance. This paper proposes a new class of models for data clustering that addresses set-valued data as well as unknown number of clusters, using a Dirichlet Process mixture of Poisson random finite sets. We also develop an efficient Markov Chain Monte Carlo posterior inference technique that can learn the number of clusters and mixture parameters automatically from the data. Numerical studies are presented to demonstrate the salient features of this new model, in particular its capacity to discover extremely unbalanced clusters in data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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